Method and apparatus for interfacing synchronous core network with asynchronous radio network

ABSTRACT

A method and apparatus for interfacing a synchronous core network with an asynchronous radio network in a next-generation mobile telecommunications system is disclosed. The method for mapping a message in order to interface a synchronous core network with an asynchronous radio network, the radio network having a base station (BS), the base station having a radio resource controller, a radio link controller, a medium access controller and a physical controller, the method comprising the steps of: a) selecting a function necessary to map a synchronous message to an asynchronous message; b) determining whether the synchronous message is to be transmitted to the mobile station or not; c) storing information necessary to map the synchronous message to the asynchronous message if the synchronous message is to be transmitted to the mobile station; d) mapping parameters in the synchronous message to those in the asynchronous message, thereby generating the asynchronous message; e) discarding the message not to be transmitted to the mobile station after storing parameters included in the message not to be transmitted onto a predetermined device; and f) transmitting the asynchronous message to the radio resource controller.

FIELD OF THE INVENTION

The present invention relates to a method and apparatus for interfacinga synchronous core network with an asynchronous radio network; and, moreparticularly to a method and apparatus for interfacing a synchronouscore network with an asynchronous radio network in a next-generationmobile telecommunications system.

DESCRIPTION OF THE PRIOR ART

In a conventional synchronous mobile telecommunication system, asynchronous mobile station is connected to a synchronous radio network(for example, a CDMA-2000 radio network), and an ANSI-41 network isconnected to a core network.

In a conventional asynchronous mobile telecommunication system, anasynchronous mobile station is connected to an asynchronous radionetwork (for example, a UMTS (universal mobile telecommunication system)Terrestrial Radio Access Network (UTRAN)), and a global system formobile communications-mobile application part (GSM-MAP) network isconnected to a core network.

FIG. 1 shows core network interface architectures of the conventionalsynchronous/asynchronous mobile telecommunication systems as mentionedabove.

FIG. 1A is a view showing the core network interface architecture of theconventional synchronous mobile telecommunications system. In thisdrawing, the reference numeral 110 denotes a synchronous mobile station,120 denotes a synchronous radio network (e.g., a code division multipleaccess-2000 (CDMA-2000) radio network) which performs a data interfacingoperation with the synchronous mobile station 110 and includes asynchronous base transceiver station/base station controller (BTS/BSC),and 130 denotes a synchronous core network which is connected to thesynchronous radio network 120 and includes a synchronous mobile servicesswitching center (MSC) 131 and an ANSI-41 network 133.

In the above core network interface architecture of the conventionalsynchronous mobile telecommunication system, the synchronous mobilestation 110 can be connected to only the synchronous radio network 120as well known to one skilled in the art, which is in turn connected tothe synchronous core network 130, thereby allowing the synchronousmobile station 110 to be interfaced with only the synchronous corenetwork 130.

FIG. 1B is a view showing the core network interface architecture of theconventional asynchronous mobile telecommunication system. In thisdrawing, the reference numeral 140 denotes an asynchronous mobilestation, 150 denotes an asynchronous radio network (i.e., a UTRAN) whichincludes a base transceiver station (BTS) and a radio network controller(RNC), and 160 denotes an asynchronous core network which includes anasynchronous mobile services switching center (MSC) 161 connected to theasynchronous radio network 150 and a GSM-MAP network 163 connected tothe asynchronous MSC 161.

In the above core network interface architecture of the conventionalasynchronous mobile telecommunications system, the asynchronous mobilestation 140 is connected to the asynchronous radio network 150 (e.g.,UTRAN) which is in turn connected to the asynchronous core network 160,thereby allowing the asynchronous mobile station 140 to perform a datainterfacing operation with the asynchronous core network 160.

FIG. 2 shows layered protocol structures of the conventional mobiletelecommunication systems as mentioned above.

FIG. 2A is a view showing the layered protocol structure of theconventional synchronous mobile telecommunications system. In thisdrawing, the reference numeral 110 denotes a synchronous mobile station,120 a synchronous radio network and 50 a synchronous core networkconnected to the synchronous radio network 130.

The synchronous mobile station 110 comprises a layer3 111, a layer2 114and a layer1 115. The layer3 111 includes a synchronous call control(CC) entity 113 for a call management and a synchronous mobilitymanagement (MM) entity 112 for a mobility management.

The layer1 115 is a physical layer which offers data transport servicesto higher layers and transfers transport blocks over a radio interface.

The layer2 114 is a data link layer which includes following sub layers,a medium access control (MAC) sub layer and a radio link control (RLC)sub layer. However, the sub layers are not shown in this drawing.

The MAC sub layer offers data transfer services on logical channels to ahigher layer, the RLC sub layer, and on transport channels to a lowerlayer, the physical layer 36. The MAC sub layer is responsible formapping of the logical channel onto the appropriate transports channel.

The RLC sub layer offers data transfer services on primitive to a higherlayer and on logical channels to a lower layer, MAC sub layer. Also, theRLC sub layer performs a error correction, a duplicate detection, aciphering and a flow control of the data.

The layer3 114 is a network layer which includes following sub layers, asynchronous radio resource (RR) sub layer, a synchronous call control(CC) entity 113 and a mobility management (MM) entity 112. Insynchronous system, the synchronous RR sub layer is not apparentlyseparated from the others in the layer3 111.

The RR sub layer offers data transfer services on primitive to a lowerlayer, RLC sub layer, and handles a control plane signaling of thelayer3 111 between a mobile station and a synchronous radio network. TheRR sub layer manages a radio resource. Also, the RR sub layerassigns/re-configures/releases the radio resource to the mobilestation/radio network.

The CC entity 113 handles a call control signaling of layer3 between themobile stations and the synchronous radio network.

The MM entity 112 handles a mobility management signaling of layer 3between the mobile stations and the synchronous radio network.

The layers 3 to 1 111, 114 and 115 in the synchronous mobile station 110communicate with corresponding layers 121, 122 and 123 in thesynchronous radio network 120.

The synchronous radio network 120 comprises a layer3 121, a layer2 122and a layer1 123. The layers 3 to 1 121, 122 and 123 in the synchronousradio network 120 correspond respectively to those in the synchronousmobile station 110.

The layers 3 to 1 121, 122 and 123 in the synchronous radio network 120communicate with corresponding layers in the synchronous mobile station110 and the synchronous core network 130.

The synchronous core network 130 comprises a layer3 131, a layer2 134and a layer 1 135. The layers 3 to 1 in the synchronous radio network130 correspond respectively to those in the synchronous radio network120.

The layers 3 to 1 131, 134 and 135 in the synchronous core network 130communicate with corresponding layers 121, 122 and 123 in thesynchronous radio network 120.

In the conventional synchronous mobile station and radio network as thelayered protocol structure, the synchronous mobile station 110 receivesa Sync channel message from the synchronous radio network 120 over aSync channel and acquires information necessary to its connection to thesynchronous core network 130, including information related to thesynchronous core network 130 and information about the synchronous radionetwork 120, from the received Sync channel message.

In other words, for interfacing with the synchronous ANSI-41 network viathe synchronous radio network, the synchronous mobile station acquiressystem information (i.e., information related to the radio network andcore network) after it is powered on.

Information elements are written in the Sync channel message received bythe synchronous mobile station, as follows:

-   -   a) Protocol Revision Level: 8 bits,    -   b) Minimum Protocol Revision Level: 8 bits,    -   c) System Identification: 15 bits,    -   d) Network Identification: 16 bits,    -   e) Pilot Pseudo Noise (PN) sequence offset index: 9 bits,    -   f) Long Code State: 42 bits,    -   g) System Time: 36 bits,    -   h) The number of Leap seconds that have occurred since the start        of System Time: 8 bits,    -   i) Offset of local time from System Time: 6 bits,    -   j) Daylight savings time indicator: 1 bit,    -   k) Paging Channel Data Rate: 2 bits,    -   l) Frequency assignment: 11 bits,    -   m) Extended frequency assignment: 11 bits, and    -   n) Orthogonal transmit diversity mode: 2 bits.

The synchronous mobile station stores the following information elementsfrom the received Sync channel message in its memory:

-   -   a) Protocol Revision Level: 8 bits,    -   b) Minimum Protocol Revision Level: 8 bits,    -   c) System Identification: 15 bits,    -   d) Network Identification: 16 bits,    -   e) Pilot PN sequence offset index: 9 bits,    -   f) Long Code State: 42 bits,    -   g) System Time: 36 bits,    -   h) Paging Channel Data Rate: 2 bits, and    -   i) Orthogonal transmit diversity mode: 2 bits.

FIG. 2B is a view showing the layered protocol structure of theconventional asynchronous mobile telecommunications system. In thisdrawing, the reference numeral 140 denotes an asynchronous mobilestation, 150 an asynchronous radio network (e.g., UTRAN) and 160 anasynchronous core network.

The asynchronous mobile station 140 comprises a non-access stratum (NAS)part, a layer3 144, a layer2 145 and a layer1 146. In particular, thelayer3 144 includes an access stratum (AS) part. The NAS part includesan asynchronous call control (CC) entity 143 for management of a calland an asynchronous mobility management (MM) entity 142 for managementof a mobility. The AS part includes an asynchronous radio resourcecontrol (RRC) block. In the asynchronous system, the asynchronous RRCsub layer is apparently separated from the NAS part. Functions of theasynchronous RRC sub layer are the same as those of the synchronous RRsub layer.

The asynchronous radio network 150 comprises a layer3 151, a layer2 152and a layer1 153. The layer3 151 of the asynchronous radio network 150has no NAS part having an asynchronous CC entity and an asynchronous MMentity. The layers 3 to 1 of the asynchronous radio network 150 areconnected and correspond respectively to those in the asynchronousmobile station 140 and those in the asynchronous core network 160.However, since the asynchronous radio network 150 does not have the NASpart, i.e., the asynchronous CC entity and the asynchronous MM entity,the NAS parts of the asynchronous mobile station 140 and theasynchronous core network 160 are coupled to each other not through theasynchronous radio network 150.

The asynchronous core network 160 comprises a NAS part 161 connected tothat of the asynchronous mobile station 140, a layer3 164 having a ASpart (not shown in FIG. 2B), a layer2 165 and a layer1 166 connectedrespectively to those in the asynchronous radio network 150. The NASpart comprises an asynchronous CC entity 163 for management of a calland an asynchronous MM entity 162 for management of a mobility.

Functions of the layer 3 to 1 of the asynchronous system are similarwith those of the synchronous system except for an operating type.Therefore, for convenience, detailed description of the layer 3 to 1will be skipped.

The more detailed descriptions about layered protocol structures arewell taught in 3^(rd) Generation Partnership Project (3GPP), TechnicalSpecification Group (TSG)—Radio Access Network (RAN): 3G TS25.301 (RadioInterface Protocol Architecture), 3G TS25.302 (Services provided by thephysical layer), 3G TS25.321 (MAC Protocol Specification), 3G TS25.322(RLC Protocol Specification) and 3G TS25.331 (RRC ProtocolSpecification) in detail.

In the conventional asynchronous mobile station and radio network havingthe layered protocol structure, the asynchronous mobile station 140receives a system information message from the asynchronous radionetwork 150 over a broadcast control channel (BCCH) and acquiresinformation necessary to its connection to the asynchronous core network160, including information related to the asynchronous core network 160and information about the asynchronous radio network 150, from thereceived system information message.

IMT-2000 systems are the third generation systems which aim to unify thevarious mobile communication networks and services into one to providemany mobile communication services. The systems can provide multimediaservices under multi-environments through various air-interfaces andhigh capacity. Also, in the aspect of services, the systems can providemultimedia services of speech, image and data up to the rate of 2 Mbpsand an international roaming. And, in the aspect of network, the systemsare total systems which are based on ATM networks and combine fixed andwireless systems.

IMT-2000 system requires new system concept, a high-level adaptationtechnology, and a novel network technology, as well all conventionaltechnologies which were already adopted in the second digital cellularsystem.

As described above, in the next-generation mobile telecommunicationsystem such as the IMT-2000 system, either the GSM-MAP network used inthe above conventional asynchronous mobile telecommunications system orthe ANSI-41 network used in the above conventional synchronous mobiletelecommunications system should be employed as a core network in orderto perform an international roaming in a synchronous or asynchronousmobile telecommunications system of an IMT-2000 system.

According to network deployment scenarios, the IMT-2000 system can havethe following four interface architectures; first: synchronous mobilestation—synchronous radio network synchronous ANSI-41 network, second:synchronous mobile station—synchronous radio network—asynchronousGSM-MAP network, third: asynchronous mobile station—asynchronous radionetwork—synchronous ANSI-41 network and fourth: asynchronous mobilestation—asynchronous radio network—asynchronous GSM-MAP network.

FIG. 3 is a view showing a protocol stack structure for interfacing amobile station and a base station with a core network in anext-generation mobile telecommunications system.

Referring to FIG. 3, it is illustrated a protocol stack structure forinterfacing a mobile station and a base station with a core networkhaving the same or a different operating type with/from the mobilestation and the base station in a next-generation mobiletelecommunications system such as the IMT-2000 system.

The asynchronous mobile station includes a physical layer, a mediumaccess layer, a radio link layer, a radio resource layer, a mobilitymanagement entity and a call control entity. Also, the asynchronousmobile station includes extensions and hooks.

The extension performs a mapping function between the asynchronousmobile station and the synchronous core network. The hook providesenvironments for performing a mapping function between the asynchronousmobile station and the synchronous core network.

The asynchronous base station includes the same elements with those ofthe asynchronous mobile station.

Concepts of the protocol stack structure for interfacing a mobilestation and a base station and a core network are already defined,however, specific functions the protocol stack structure are not yetdefined and proposed.

The conventional synchronous mobile station and radio network have adisadvantage in that the synchronous mobile station cannot be interfacedwith any other networks than a synchronous core network connectedthereto because synchronous mobile station cannot recognize anasynchronous message from an asynchronous core network, the conventionalsynchronous mobile station cannot communicate with the asynchronous corenetwork.

Similarly, the conventional asynchronous mobile station and radionetwork have a disadvantage in that the asynchronous mobile stationcannot be interfaced with any other networks than an asynchronous corenetwork because asynchronous mobile station cannot recognize asynchronous message from a synchronous core network, the conventionalasynchronous mobile station cannot communicate with the synchronous corenetwork.

SUMMARY OF THE INVENTION

Therefore, it is an object of the invention is to provide a method andapparatus for interfacing a synchronous core network with anasynchronous mobile station in a next-generation mobiletelecommunication system.

It is another object of the invention is to provide a method andapparatus for transmitting a CC/MM entity between a synchronous corenetwork between an asynchronous mobile station in a next-generationmobile telecommunication system.

It is further another object of the invention is to provide a method andapparatus for mapping a message transmitted between a synchronous corenetwork and an asynchronous mobile station in a next-generation mobiletelecommunication system.

It is still further another object of the invention is to provide amethod and apparatus for transmitting a message between a synchronouscore network to an asynchronous mobile station in a next-generationmobile telecommunication system.

In accordance with an aspect of the present invention, there is provideda method for mapping a message in order to interface a synchronous corenetwork with an asynchronous radio network a base station (BS), the basestation having a radio resource controller, a radio link controller, amedium access controller and a physical controller, the methodcomprising the steps of: a) selecting a function necessary to map asynchronous message to an asynchronous message; b) determining whetherthe synchronous message is to be transmitted to the mobile station ornot; c) storing information necessary to map the synchronous message tothe asynchronous message if the synchronous message is to be transmittedto the mobile station; d) mapping parameters in the synchronous messageto those in the asynchronous message, thereby generating theasynchronous message; e) discarding the message not to be transmitted tothe mobile station after storing parameters included in the message notto be transmitted onto a predetermined device; and f) transmitting theasynchronous message to the radio resource controller.

In accordance with another aspect of the present invention, there isprovided a method for transmitting a message from a synchronous corenetwork to an asynchronous radio network having a base station (BS), thebase station having a radio resource controller, a radio linkcontroller, a medium access controller and a physical controller, themethod comprising the steps of: receiving a synchronous message from thesynchronous core network; and mapping the synchronous message to anasynchronous message based on information from supporting entitiesplaced in the radio resource controller, the radio link controller, themedium access controller and the physical controller.

In accordance with further another aspect of the present invention,there is provided a method for transmitting a message from anasynchronous radio network to a synchronous core network, the radionetwork having a base station (BS), a mobile station and the basestation respectively having a radio resource controller, a radio linkcontroller, a medium access controller and a physical controller, themethod comprising the steps of: receiving an asynchronous message; andmapping the asynchronous message to a synchronous message based oninformation from supporting entities placed in the radio resourcecontroller, the radio link controller, the medium access controller andthe physical controller.

In accordance with still further another aspect of the presentinvention, there is provided a method for transmitting a callcontrol/mobility management (CC/MM) message from a synchronous corenetwork to an asynchronous radio network, the radio network having amobile station (MS), a base transceiver station (BTS) and a base stationcontroller (BSC), the method comprising the steps of: a) receiving amessage received from the synchronous core network, the message havingparameters to be bypassed and parameters not to be bypassed; b)determining whether the parameters are to be bypassed or not; c)bypassing the parameters to be bypassed to the mobile station if theparameters are to be bypassed; and d) processing the parameters not bebypassed and generating a processed message if not.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects and features of the instant invention willbecome apparent from the following description of preferred embodimentstaken in conjunction with the accompanying drawings, in which:

FIG. 1A is a view showing the core network interface architecture of theconventional synchronous mobile telecommunications system;

FIG. 1B is a view showing the core network interface architecture of theconventional asynchronous mobile telecommunications system;

FIG. 2A is a diagram of layer protocols of a conventional synchronousmobile telecommunications system;

FIG. 2B is a diagram of layer protocols of a conventional asynchronousmobile telecommunications system;

FIG. 3 is a view showing a protocol stack structure for interfacing amobile station and a base station with a core network in anext-generation mobile telecommunications system;

FIG. 4 is a diagram of protocol layers of an asynchronous mobile stationand an asynchronous radio network for interfacing with a synchronouscore network in accordance with an embodiment of the present invention;

FIGS. 5A to 5D are block diagrams of supporting entities in accordancewith the present invention;

FIG. 6 is a block diagram of a mapping entity in accordance with thepresent invention;

FIG. 7 is a flow chart illustrating a method for transmitting a messagebetween an asynchronous radio network and a synchronous core network;

FIG. 8 is a block diagram of a device for mapping a call control/mobilemanagement (CC/MM) message between an asynchronous radio network and asynchronous core network in accordance with another embodiment of thepresent invention;

FIG. 9 is a flow chart illustrating a method for determining whether theCC/MM message is bypassed or not;

FIG. 10 is a flow chart illustrating a method for mapping synchronousCC/MM message to asynchronous CC/MM message;

FIG. 11 is a flow chart illustrating a method for processing informationused in the radio network; and

FIG. 12 is a diagram showing operations for converting synchronousauthentication request message to asynchronous message.

PREFERRED EMBODIMENT OF THE INVENTION

Hereinafter, preferred embodiments of the present invention will bedescribed in detail with reference to the accompanying drawings.

FIG. 4 is a diagram of protocol layers of an asynchronous mobile stationand an asynchronous radio network for interfacing the asynchronous radionetwork with a synchronous core network in accordance with the presentinvention.

The reference numeral 400 denotes an asynchronous radio network. Thebase station 400 includes a synchronous protocol processing block 402, amapping entity 404, a call control/mobility management (CC/MM) entity406, a radio resource controller 408, a radio link controller 410, amedium access controller 412, a physical layer 414 and a transport block416.

The radio resource controller 408, the radio link controller 410, themedium access controller 412 and the physical layer 414 respectivelyinclude a supporting entity 408 a, 410 a, 412 a or 414 a.

The reference numeral 420 denotes an asynchronous mobile station. Theasynchronous mobile station 420 includes a mapping entity 422, a callcontrol/mobility management (CC/MM) entity 424, a radio resourcecontroller 426, a radio link controller 428, a medium access controller430 and a physical layer 432.

The radio resource controller 426, the radio link controller 428, themedium access controller 430 and the physical layer 432 respectivelyinclude a supporting entity 426 a, 428 a, 430 a or 432 a.

The supporting entity interfaces the asynchronous radio network with thesynchronous core network.

If data is received from the synchronous core network, it is determinedwhether the data is to be transmitted to the mobile station 420 or not.If the data is be transmitted to the mobile station, a message mappingor a parameter mapping of the data is performed in the mapping entity404. The mapped data is provided to the radio resource controller 408.The radio resource controller 408 transmits the mapped data to the CC/MMentity 406 of the mobile station 420 by using the radio resourcemessage.

The mapping entity 404 transmits an information request primitiverequesting information necessary to map or to generate parameters to thesupporting entity 408 a in the radio resource controller 408. Whenreceiving the information request primitive, the supporting entitytransmits the information requested to the mapping entity 404.

Referring to FIG. 5A, the supporting entity 104 a includes a SE serviceprocessing block 502, a layer link block 504, and a layer functionprocessing block 506.

The SE service processing block 502 provides a communication path for adata communication between the supporting entity and the mapping entity404. The SE service processing block 502 transmits the informationrequest primitive to the layer link block 504.

The layer link block 504 interfaces the SE service processing block 502with the layer function processing block 506. In other words, the layerlink block 504 maps information related to upper layers with to datahaving a format used in the layer function processing block 506.

The layer function processing block 506 controls a radio resourcesetting and management based on information for the layer link block504. The layer function processing block 506 obtains informationrequested by the mapping entity 404 from the radio resource controller.The information obtained from the radio resource controller istransmitted to the mapping entity 404 through the layer functionprocessing block 506, the layer link block 504 and the SE serviceprocessing block 502.

Referring to FIG. 4 again, the radio link controller 410 controls asetting/releasing of a radio link connection based on information fromthe radio resource controller 408. If the mapping entity 404 requeststhe supporting entity 410 a in the radio link controller 410 to provideinformation necessary to a parameter mapping or a parameter generation,the supporting entity 410 a provides requested information to themapping entity 404.

Referring to FIG. 5B, the supporting entity 410 a includes a SE serviceprocessing block 512, a layer link block 514, and a layer functionprocessing block 516.

The SE service processing block 502 provides a communication path fordata communication between the supporting entity and the mapping entity404. The SE service processing block 512 transmits the informationrequest primitive to the layer link block 514.

The layer link block 514 interfaces the SE service processing block 512with the layer function processing block 516.

The layer function processing block 516 controls setting/releasing aconnection to the radio link controller and data transmission based oninformation from the layer link block 504. The radio link controller isresponsible for data transmission. The layer function processing block516 obtains information requested by the mapping entity from the radiolink controller. The information obtained from the radio link controlleris transmitted to the mapping entity through the layer functionprocessing block 516, the layer link block 514 and the SE serviceprocessing block 512.

Referring to FIG. 4 again, the medium access controller 106 controlsaccess to a physical medium based on the information obtained from theradio link controller 410. If the mapping entity 404 requests thesupporting entity 412 a in the medium access controller 412 to provideinformation necessary to a parameter mapping or a parameter generation,the supporting entity 412 a provides requested information to themapping entity 404.

Referring to FIG. 5C, the supporting entity 412 a includes a SE serviceprocessing block 522, a layer link block 524, and a layer functionprocessing block 526.

The SE service processing block 522 provides a communication path fordata communication between the supporting entity and the mapping entity404. The SE service processing block 522 transmits the informationrequest primitive to the layer link block 526.

The layer link block 524 interfaces the SE service processing block 522with the layer function processing block 526.

The layer function processing block 526 controls reassignment of theradio resource, interfaces the physical layer 414 with the radioresource controller 408. The layer function processing block 526 obtainsinformation requested by the mapping entity from the medium accesscontroller. The information obtained from the medium access controlleris transmitted to the mapping entity through the layer functionprocessing block 526, the layer link block 524 and the SE serviceprocessing block 522.

Referring to FIG. 4 again, the physical layer 414 controls a connectionto a physical medium based on the information obtained from the mediumaccess controller 412. If the mapping entity 404 requests the supportingentity 414 a in the medium access controller 414 to provide informationnecessary to a parameter mapping or a parameter generation, thesupporting entity 414 a provides requested information to the mappingentity 404.

Referring to FIG. 5D, the supporting entity 414 a includes a SE serviceprocessing block 532, a layer link block 534, and a layer functionprocessing block 536.

The SE service processing block 532 provides a communication path fordata communication between the supporting entity and the mapping entity404. The SE service processing block 532 transmits the informationrequest primitive to the layer link block 534.

The layer link block 534 interfaces the SE service processing block 532with the layer function processing block 536.

The layer function processing block 536 performs a radio interface. Thelayer function processing block 536 obtains information requested by themapping entity from the physical layer. The information obtained fromthe physical layer is transmitted to the mapping entity through thelayer function processing block 536, the layer link block 534 and the SEservice processing block 532.

The mapping entity 422 in the mobile station 420 receives informationfrom the synchronous core network and transmits information to betransmitted to the synchronous core network through communicationsmessage with the mapping entity 404: in the radio access network 400.The mapping entity 422 performs the parameter mapping or the parametergeneration which is similar to be performed by the mapping entity 404.Therefore, for convenience, detailed description will be skipped in thisspecification.

FIG. 6 is a block diagram of a mapping entity in accordance with anembodiment of the present invention.

The mapping entity 404 includes a filtering block 602, a service accesspoint (SAP) block 604, a data storing/compensating block 606, aparameter mapping block 608, a message/parameter generating block 610and a discarding block 612.

The filtering block 602 selects a function necessary to generate or tomap messages received from the asynchronous radio network or theasynchronous mobile station.

The data storing/compensating block 606, if necessary, storesinformation necessary to generate or to map the message/parameter andcorrects stored message/parameter.

The parameter mapping block 608 is coupled to the filtering block 602.The parameter mapping block 608 maps the parameters of the messagesreceived from the filtering block 602 into parameters of messages forthe asynchronous radio network, if the message is transmitted from thesynchronous core network to the asynchronous mobile station. Theparameter mapping block 608 maps the parameters of the messages receivedfrom the filtering block 602 into parameters of messages for thesynchronous core network, if the message is transmitted from theasynchronous mobile station to the synchronous core network. Then, themapped data is transmitted to the filtering block 602.

The message/parameter generating block 610 generates messages andparameters to be transmitted to the asynchronous radio network or thesynchronous core network based on the data stored onto the datastoring/compensating block 606.

In other words, the message/parameter generating block 610 generates anew message or parameter if there is no related parameter in the messageto be transmitted to the asynchronous mobile station or the synchronouscore network. In similar, the message/parameter generating block 610generates a new message or parameter if there is no related parameter inthe message to be transmitted to the synchronous core network.

The discarding block 612 discards the message/parameter not to betransmitted to the asynchronous radio network in the messages/parametersreceived from the filtering block 602. The discarding block 612 allowsinformation included in the received parameter to be stored on adatabase 614 and corrects the information stored on the database 614.The discarding block 612 discards the message/parameter not to betransmitted to the asynchronous mobile station in themessages/parameters received from the filtering block 602. Thediscarding block 612 allows information included in the receivedparameter to be stored on a database 614 and corrects the informationstored on the database 614.

The filtering block 602 transmits the message or parameter which is usedfor the filtering block 602 or to be transmitted to the asynchronousmobile station 420 to the SAP block 604. The message or the parametertransmitted to the SAP block 604 is a message or a parameter which ismapped or generated in the parameter mapping block 608, themessage/parameter generating block 610 or the discarding block 612.

The SAP block 604 provides a path for a data transmission between thefiltering block 602 and the radio resource controller. The SAP block 604manages an asynchronous service access point function.

When transmitting the message/parameter to the lower layers, ifpossible, the message/parameter is transmitted to the radio resourcecontroller by the RRC SAP block. If there is a function which is notdefined in the RRC SAP block, the message/parameter is transmitted tothe radio resource controller by a supporting entity (SE) SAP functionof the supporting entity 604 a.

Then, the RRC transfers the received message to its lower layers, ortransmits the received message to the CC/MM 424 of the asynchronousmobile station 420 by using a RRC message.

The mapping entity 422 included in the asynchronous mobile station haselements and functions similar to those of the asynchronous radionetwork. Therefore, for convenience, detailed description about themapping entity 422 will be skipped in the specification.

FIG. 7 is a flow chart illustrating a method for transmitting a messagebetween an asynchronous radio network and a synchronous core network.

First, a message is received from a synchronous core network in stepS702. The process goes to step S704 to select a function necessary totransmit the received message to the asynchronous mobile station. Inother words, one of a message mapping function, a message/parametergenerating function, a message/parameter storing function, or amessage/parameter discarding function is selected.

At step S706, it is determined whether there is the message to betransmitted to the asynchronous mobile station. If there is no messageto be transmitted to the asynchronous mobile station, the parametersincluded in the message are stored onto the database 614 and the messageis discarded at step S708.

If there is a message to be transmitted to the asynchronous mobilestation, it is determined whether there is a related parameter in thereceived message at step S710.

If there is the related parameter in the received message, the parameterfor the synchronous message is mapped to a parameter for theasynchronous message at step 712.

If there is no related parameter, a parameter for the asynchronousmessage is generated by using the stored parameter at step 714.

Then, it is determined whether the mapped or generated message can betransmitted by using a conventional RRC SAP function at step S716. Ifpossible, the message is transmitted to the RRC by using theconventional RRC SAP function at step S718. If not, the message istransmitted to the RRC by using the supporting entity (SE) SAP functionat step S720.

The RRC transmits the generated message to the CC/MM entity of theasynchronous mobile station by using the RRC message at step S722.

FIG. 8 is a block diagram of a CC/MM mapper for mapping a callcontrol/mobile management (CC/MM) message between an asynchronous radionetwork and a synchronous core network.

Hereinafter, a method and apparatus for interfacing: a synchronous corenetwork with a radio network in accordance with another embodiment ofthe present invention will be described with reference to FIGS. 8 to 12.

The CC/MM mapper includes a discriminator 842 a bypass parameterprocessing block (BPP) 844 and an action parameter processing block(APP) 846.

The discriminator 840 monitors a CC/MM message and divides the messageinto parameters to be bypassed and parameters not to be bypassed.

The BPP 844 encapsulates the parameter to be bypassed or maps theparameter in accordance with a message format used in the radio resourcecontroller of the asynchronous radio network. Then, the BPP 844transmits encapsulated or mapped parameter to the asynchronous mobilestation.

The APP 846 stores onto the database 848 or transmits information to beprocessed in the asynchronous radio network to lower protocol layers,i.e., the radio resource controller 850, the radio link controller 852and the medium access controller 854.

FIG. 9 is a flow chart illustrating a method for determining whether theCC/MM message is bypassed or not.

First, a message for CC/MM is received from the synchronous core networkat step S902. The discriminator divides the message into parameters tobe bypassed and parameters not to be bypassed at step S904. Then, it isdetermined whether the parameter is to be bypassed or not at step S906.If the message is to be bypassed, the message is transmitted to the BPP844 at step S908. If not, the message is transmitted to the APP 846 atstep S910.

FIG. 10 is a flow chart illustrating a method for mapping synchronousCC/MM message to asynchronous CC/MM message.

The BPP 844 receives a message to be bypassed from the discriminator atstep S1002, and determines whether the message can be converted by amapping or an encapsulation at step S1004. If the message cannot beconverted by the mapping method, in other words, if the message can beconverted by the encapsulating method, the BPP 844 encapsulates themessage in accordance with the data format of the asynchronous radioresource controller and bypasses an encapsulated message to theasynchronous mobile station at step S1008.

If the message should be converted by the mapping method, the BPP 844maps the synchronous parameter into an asynchronous parameter anddetermines whether a size of the mapped parameter is equal to apredetermined size at steps S1006 and S1011. If the size of the mappedparameter is equal to the predetermined size, the BPP 844 arranges themapped parameters in the order of the synchronous message and transmitsthe mapped parameter to the asynchronous mobile station at step S1014.If not, the BPP 844 adjusts a length of the mapped parameter inaccordance with the predetermined size at step S1012. Then, the BPP 844arranges the parameters in the order of the asynchronous message andtransmits the parameter having the same length with the predeterminedsize at steps S1012 and S1014.

FIG. 11 is a flow chart illustrating a method for processing a parameternot to be bypassed.

The APP 846 receives a parameter not to be bypassed, i.e., a parameterused in the asynchronous radio network at step S1102, and determineswhether the parameter of the message is to be processed at step S1104.

If the parameter is to be processed, the APP processes the parameters atstep S1106. If not, the APP stores the message onto the database at step1108.

FIG. 12 is a diagram showing operations for converting synchronousauthentication request message to asynchronous authentication requestmessage.

If an authentication request message is received at a synchronous CC/MMentity 830 a included in a synchronous core network, a call processingblock 840 of an asynchronous base station determines whether theauthentication request message should be bypassed or not in order to betransmitted to an asynchronous CC/MM entity 810 a in an asynchronousmobile station.

The discriminator 842 divides the authentication request message intoparameters to be bypassed and parameters to be processed in theasynchronous base station. For example, parameters to be processed inthe asynchronous base station include a mobility identity, a last pagingframe class, etc. The parameters to be bypassed include a message type,an authentication challenge parameter, etc.

The parameters to be bypassed are transmitted to the BPP 844. Theparameters to be processed in the asynchronous base station aretransmitted to the APP 846.

The BPP 844 receives the message to be bypassed from the discriminatorand determines whether the message can be converted by a mapping or anencapsulating method. If the message cannot be converted by the mappingmethod, in other words, if the message should be converted by theencapsulating method, the BPP 844 encapsulates the parameter inaccordance with the data format of the asynchronous radio resourcecontroller and bypasses the encapsulated parameter to the asynchronousmobile station.

If the parameter should be converted by the mapping method, the BPP 844maps the synchronous parameter into an asynchronous parameter anddetermines whether a size of the mapped parameter is equal to apredetermined size. If the size of the mapped parameter is equal to thepredetermined size, the BPP transmits the mapped parameter to theasynchronous mobile station. If not, the BPP 844 adjusts a length of themapped parameter in accordance with the predetermined size by usingpadding. The BPP 844 bypasses the parameter having the same length withthe predetermined size in order to transmit the parameter.

If the APP 846 receives a message not to be bypassed, i.e., theparameter used in the asynchronous base station, and determines whetherthe parameter is to be processed in a lower layer, for example, RRC, RLCor MAC. If the parameter is to be processed in lower layer, the APP 846allows the parameter to be processed in the lower layer, for example,RRC, RLC or MAC.

If the parameters of the message are to be reused, the APP 846 storesthe message onto the database. When a response message to theauthentication request message is received from the asynchronous mobilestation, the asynchronous base station transmits the response message tothe synchronous core network based on the stored parameters.

Although the preferred embodiments of the invention have been disclosedfor illustrative purpose, those skilled in the art will be appreciatethat various modifications, additions and substitutions are possible,without departing from the scope and spirit of the invention asdisclosed in the accompanying claims.

1. A method for mapping a message in order to interface a synchronouscore network with an asynchronous radio network having a base station(BS), the base station having a radio resource controller, a radio linkcontroller, a medium access controller and a physical controller, themethod comprising the steps of: a) selecting a function necessary to mapa synchronous message to an asynchronous message; b) determining whetherthe synchronous message is to be transmitted to the mobile station ornot; c) storing information necessary to map the synchronous message tothe asynchronous message if the synchronous message is to be transmittedto the mobile station; d) mapping parameters in the synchronous messageto those in the asynchronous message, thereby generating theasynchronous message; e) discarding the message not to be transmitted tothe mobile station after storing parameters included in the message notto be transmitted; and f) transmitting the asynchronous message to theradio resource controller.
 2. The method as recited in claim 1, whereinthe step d) includes the steps of: d1) determining whether there is asynchronous parameter in the message to be transmitted to the mobilestation or not; d2) if there is the synchronous parameter, mapping thesynchronous parameter to an asynchronous parameter; and d3) if not,generating an asynchronous parameter based on stored information.
 3. Anapparatus for mapping a message in order to interface a synchronous corenetwork with an asynchronous radio network having a base station (BS),the base station having a radio resource controller, a radio linkcontroller, a medium access controller and a physical controller, theapparatus comprising: means for selecting a function necessary to map asynchronous message to an asynchronous message; means for determiningwhether the synchronous message is to be transmitted to the mobilestation or not; means for storing information necessary to map thesynchronous message to the asynchronous message if the synchronousmessage is to be transmitted to the mobile station; means for mappingparameters in the synchronous message to those in the asynchronousmessage, thereby generating the asynchronous message; means fordiscarding the message not to be transmitted to the mobile station afterstoring parameters included in the message not to be transmitted; andmeans for transmitting the asynchronous message to the radio resourcecontroller.
 4. The apparatus as recited in claim 3, wherein the meansfor mapping parameters includes: means for determining whether there isa synchronous parameter in the message to be transmitted to the mobilestation or not; means for mapping the synchronous parameter to anasynchronous parameter if there is the synchronous parameter; and meansfor generating an asynchronous parameter based on stored information ifnot.
 5. A base station for mapping a message in order to interface asynchronous core network with an asynchronous radio network having abase station (BS), the base station having a radio resource controller,a radio link controller, a medium access controller and a physicalcontroller, the base station comprising: means for selecting a functionnecessary to map a synchronous message to an asynchronous message; meansfor determining whether the synchronous message is to be transmitted tothe mobile station or not; means for storing information necessary tomap the synchronous message to the asynchronous message if thesynchronous message is to be transmitted to the mobile station; meansfor mapping parameters in the synchronous message to those in theasynchronous message, thereby generating the asynchronous message; meansfor discarding the message not to be transmitted to the mobile stationafter storing parameters included in the message not to be transmitted;and means for transmitting the asynchronous message to the radioresource controller.
 6. The base station as recited in claim 5, whereinthe means for mapping parameters includes: means for determining whetherthere is a synchronous parameter in the message to be transmitted to themobile station or not; means for mapping the synchronous parameter to anasynchronous parameter if there is the synchronous parameter; and meansfor generating an asynchronous parameter based on stored information ifnot.
 7. A method for mapping a message in order to interface asynchronous core network with an asynchronous radio network having abase station (BS), the mobile station having a radio resourcecontroller, a radio link controller, a medium access controller and aphysical controller, the method comprising the steps of: a) selecting afunction necessary to map an asynchronous message to a synchronousmessage; b) determining whether the asynchronous message is to betransmitted to the core network or not; c) storing information necessaryto map the asynchronous message to the synchronous message if theasynchronous message is to be transmitted to the core network; d)mapping parameters in the asynchronous message to those in thesynchronous message, thereby generating the synchronous message; e)discarding the message not to be transmitted to the core network afterstoring parameters included in the message not to be transmitted; and f)transmitting the synchronous message to the radio resource controller.8. The method as recited in claim 7, wherein the step d) includes thesteps of: d1) determining whether there is an asynchronous in themessage to be transmitted to the core network or not; d2) if there isthe asynchronous parameter, mapping the asynchronous parameter to asynchronous parameter; and d3) if not, generating a synchronousparameter based on stored information.
 9. An apparatus for mapping amessage in order to interface a synchronous core network with anasynchronous radio network having a base station (BS), the mobilestation having a radio resource controller, a radio link controller, amedium access controller and a physical controller, the apparatuscomprising: means for selecting a function necessary to map anasynchronous message to a synchronous message; means for determiningwhether the asynchronous message is to be transmitted to the corenetwork or not; means for storing information necessary to map theasynchronous message to the synchronous message if the asynchronousmessage is to be transmitted to the core network; means for mappingparameters in the asynchronous message to those in the synchronousmessage, thereby generating the asynchronous message; means fordiscarding the message not to be transmitted to the core network afterstoring parameters included in the message not to be transmitted; andmeans for transmitting the synchronous message to the radio resourcecontroller.
 10. The apparatus as recited in claim 9, wherein the meansfor mapping parameters includes: means for determining whether there isan asynchronous parameter in the message to be transmitted to the corenetwork or not; means for mapping the asynchronous parameter to asynchronous parameter if there is the asynchronous parameter; and meansfor generating a synchronous parameter based on stored information ifnot.
 11. A mobile station for mapping a message in order to interface asynchronous core network with a mobile station having a radio resourcecontroller, a radio link controller, a medium access controller and aphysical controller, the mobile station comprising: means for selectinga function necessary to map an asynchronous message to a synchronousmessage; means for determining whether the asynchronous message is to betransmitted to the core network or not; means for storing informationnecessary to map the asynchronous message to the synchronous message ifthe asynchronous message is to be transmitted to the core network; meansfor mapping parameters in the asynchronous message to those in thesynchronous message, thereby generating the asynchronous message; meansfor discarding the message not to be transmitted to the core networkafter storing parameters included in the message not to be transmitted;and means for transmitting the synchronous message to the radio resourcecontroller.
 12. The mobile station as recited in claim 11, wherein themeans for mapping parameters includes: means for determining whetherthere is an asynchronous parameter in the message to be transmitted tothe core network or not; means for mapping the asynchronous parameter toa synchronous parameter if there is the asynchronous parameter; andmeans for generating a synchronous parameter based on stored informationif not.
 13. A base station for mapping a message in order to interface asynchronous core network with an asynchronous radio network having abase station (BS), the base station having a radio resource controller,a radio link controller, a medium access controller and a physicalcontroller, the base station comprising: means for selecting a functionnecessary to map an asynchronous message to a synchronous message; meansfor determining whether the asynchronous message is to be transmitted tothe core network or not; means for storing information necessary to mapthe asynchronous message to the synchronous message if the asynchronousmessage is to be transmitted to the core network; means for mappingparameters in the asynchronous message to those in the synchronousmessage, thereby generating the asynchronous message; means fordiscarding the message not to be transmitted to the core network afterstoring parameters included in the message not to be transmitted; andmeans for transmitting the synchronous message to the radio resourcecontroller.
 14. The base station as recited in claim 13, wherein themeans for mapping parameters includes: means for determining whetherthere is an asynchronous parameter in the message to be transmitted tothe core network or not; means for mapping the asynchronous parameter toa synchronous parameter if there is the asynchronous parameter; andmeans for generating a synchronous parameter based on stored informationif not.
 15. A method for transmitting a message from a synchronous corenetwork to an asynchronous radio network having a mobile station (MS)and a base station (BS), the base station having a radio resourcecontroller, a radio link controller, a medium access controller and aphysical controller, the method comprising the steps of: a) receiving asynchronous message from the synchronous core network; and b) mappingthe synchronous message to an asynchronous message based on informationfrom supporting entities placed in the radio resource controller, theradio link controller, the medium access controller and the physicalcontroller, wherein the step b) includes the steps of: b1) selecting afunction necessary to map a synchronous message to an asynchronousmessage; b2) determining whether the synchronous message is to betransmitted to the mobile station or not; b3) storing informationnecessary to map the synchronous message to the asynchronous message ifthe synchronous message is to be transmitted to the mobile station; b4)mapping parameters in the synchronous message to those in theasynchronous message, thereby generating the asynchronous message; b5)discarding the message not to be transmitted to the mobile station afterstoring parameters included in the message not to be transmitted; andb6) transmitting the asynchronous message to the radio resourcecontroller.
 16. The method as recited in claim 15, further comprisingthe steps of: a) controlling a call management and a mobility managementof the mobile station; b) controlling a radio resource used fortransmitting the asynchronous message; c) controlling a medium access tothe physical controller; and d) transporting the asynchronous message tothe asynchronous mobile station.
 17. The method as recited in claim 15,further comprising the step of: converting a synchronous protocol of thesynchronous message from the synchronous core network into anasynchronous protocol.
 18. The method as recited in claim 15, whereinthe step b4) includes the steps of: b4-1) determining whether there is asynchronous parameter in the message to be transmitted to the mobilestation or not; b4-2) if there is the synchronous parameter, mapping thesynchronous parameter to an asynchronous parameter; and b4-3) if not,generating an asynchronous parameter based on stored information. 19.The method as recited in claim 15, wherein the supporting entitiesincludes: a first supporting entity placed in the radio resourcecontroller, for providing information related to a radio resourcecontrol; a second supporting entity placed in the radio link controller,for providing information related to a radio link; a third supportingentity placed in the medium access controller, for providing informationrelated to a medium access to the physical controller; and a fourthsupporting entity placed in the physical controller, for providinginformation related to a physical interface.
 20. An apparatus fortransmitting a message from a synchronous core network to anasynchronous radio network having a mobile station (MS) and a basestation (BS), the base station having a radio resource controller, aradio link controller, a medium access controller and a physicalcontroller, the apparatus comprising: means for receiving a synchronousmessage from the synchronous core network; and a mapping entity formapping the synchronous message to an asynchronous message based oninformation from supporting entities placed in the radio resourcecontroller, the radio link controller, the medium access controller andthe physical controller, wherein the mapping entity includes: means forselecting a function necessary to map a synchronous message to anasynchronous message; means for determining whether the synchronousmessage is to be transmitted to the mobile station or not; means forstoring information necessary to map the synchronous message to theasynchronous message if the synchronous message is to be transmitted tothe mobile station; means for mapping, parameters in the synchronousmessage to those in the asynchronous message, thereby generating theasynchronous message; means for discarding the message not to betransmitted to the mobile station after storing parameters included inthe message not to be transmitted; and means for transmitting theasynchronous message to the radio resource controller.
 21. The apparatusas recited in claim 20, further comprising: means for controlling a callmanagement and a mobility management of the mobile station; means forcontrolling a radio resource used for transmitting the asynchronousmessage; means for controlling a medium access to the physicalcontroller; and means for transporting the asynchronous message to theasynchronous mobile station.
 22. The apparatus as recited in claim 21,further comprising: means for converting a synchronous protocol of thesynchronous message from the synchronous core network into anasynchronous protocol.
 23. The apparatus as recited in claim 20, whereinthe means for mapping parameters includes: means for determining whetherthere is a synchronous parameter in the message to be transmitted to themobile station or not; means for mapping the synchronous parameter to anasynchronous parameter if there is the synchronous parameter; and meansfor generating an asynchronous parameter based on stored information ifnot.
 24. The apparatus as recited in claim 20, wherein the supportingentities includes: a first supporting entity placed in the radioresource controller, for providing information related to a radioresource control; a second supporting entity placed in the radio linkcontroller, for providing information related to a radio link; a thirdsupporting entity placed in the medium access controller, for providinginformation related to a medium access to the physical controller; and afourth supporting entity placed in the physical controller, forproviding information related to a physical interface.
 25. The apparatusas recited in claim 24, wherein the first supporting entity includes:means for transmitting information from the mapping entity to the radioresource controller; means for interfacing the mapping entity with theradio resource controller; and means for controlling a radio resourcesetting and management based on information from the means forinterfacing.
 26. The apparatus as recited in claim 24, wherein thesecond supporting entity includes: means for transmitting informationfrom the mapping entity to the radio link controller; means forinterfacing the mapping entity with the radio link controller; and meansfor controlling setting and releasing a connection to the radio linkcontroller based on information from the means for interfacing.
 27. Theapparatus as recited in claim 24, wherein the third supporting entityincludes: means for transmitting information from the mapping entity tothe medium access controller; means for interfacing the mapping entitywith the medium access controller; and means for controllingreassignment of the radio resource and interface between the radio linkcontroller and the physical controller based on information from themeans for interfacing.
 28. The apparatus as recited in claim 24, whereinthe fourth supporting entity includes: means for transmittinginformation from the mapping entity to the physical controller; meansfor interfacing the mapping entity with the physical controller; andmeans for controlling radio interface based on information from themeans for interfacing.
 29. A base station for transmitting a messagefrom a synchronous core network to an asynchronous radio network havinga base station (BS), the base station having a radio resourcecontroller, a radio link controller, a medium access controller and aphysical controller, the base station comprising: means for receiving asynchronous message from the synchronous core network; and means formapping the synchronous message to an asynchronous message based oninformation from supporting entities placed in the radio resourcecontroller, the radio link controller, the medium access controller andthe physical controller, wherein the means for mapping includes: meansfor selecting a function necessary to map a synchronous message to anasynchronous message; means for determining whether the synchronousmessage is to be transmitted to the mobile station or not; means forstoring information necessary to map the synchronous message to theasynchronous message if the synchronous message is to be transmitted tothe mobile station; means for mapping parameters in the synchronousmessage to those in the asynchronous message, thereby generating theasynchronous message; means for discarding the message not to betransmitted to the mobile station after storing parameters included inthe message not to be transmitted; and means for transmitting theasynchronous message to the radio resource controller.
 30. The basestation as recited in claim 29, further comprising: means forcontrolling a call management and a mobility management of the mobilestation; means for controlling a radio resource used for transmittingthe asynchronous message; means for controlling a medium access to thephysical controller; and means for transporting the asynchronous messageto the asynchronous mobile station.
 31. The base station as recited inclaim 30, further comprising: means for converting a synchronousprotocol of the synchronous message from the synchronous core networkinto an asynchronous protocol.
 32. The base station as recited in claim29, wherein the means for mapping parameters includes: means fordetermining whether there is a synchronous parameter in the message tobe transmitted to the mobile station or not; means for mapping thesynchronous parameter to an asynchronous parameter if there is thesynchronous parameter; and means for generating an asynchronousparameter based on stored information if not.
 33. The base station asrecited in claim 29, wherein the supporting entities includes: a firstsupporting entity placed in the radio resource controller, for providinginformation related to a radio resource control; a second supportingentity placed in the radio link controller, for providing informationrelated to a radio link; a third supporting entity placed in the mediumaccess controller, for providing information related to a medium accessto the physical controller; and a fourth supporting entity placed in thephysical controller, for providing information related to a physicalinterface.
 34. The base station as recited in claim 33, wherein thefirst supporting entity includes: means for transmitting informationfrom the mapping entity to the radio resource controller; means forinterfacing the mapping entity with the radio resource controller; andmeans for controlling a radio resource setting and management based oninformation from the means for interfacing.
 35. The base station asrecited in claim 33, wherein the second supporting entity includes:means for transmitting information from the mapping entity to the radiolink controller; means for interfacing the mapping entity with the radiolink controller; and means for controlling setting and releasing aconnection to the radio link controller based on information from themeans for interfacing.
 36. The base station as recited in claim 33,wherein the third supporting entity includes: means for transmittinginformation from the mapping entity to the medium access controller;means for interfacing the mapping entity with the medium accesscontroller; and means for controlling reassignment of the radio resourceand interface between the radio link controller and the physicalcontroller based on information from the means for interfacing.
 37. Thebase station as recited in claim 33, wherein the fourth supportingentity includes: means for transmitting information from the mappingentity to the physical controller; means for interfacing the mappingentity with the physical controller; and means for controlling radiointerface based on information from the means for interfacing.
 38. Amethod for transmitting a message from an asynchronous radio network toa synchronous core network, the radio network having a base station (BS)and a mobile station, the base station having a radio resourcecontroller, a radio link controller, a medium access controller and aphysical controller, the method comprising the steps of: a) receiving anasynchronous message; and b) mapping the asynchronous message to asynchronous message based on information from supporting entities placedin the radio resource controller, the radio link controller, the mediumaccess controller and the physical controller, wherein the step b)includes the steps of: b1) selecting a function necessary to map ansynchronous message to a synchronous message; b2) determining whetherthe asynchronous message is to be transmitted to the base station ornot; b3) storing information necessary to map the asynchronous messageto the synchronous message if the asynchronous message is to betransmitted to the base station; b4) mapping parameters in theasynchronous message to those in the synchronous message, therebygenerating the synchronous message; b5) discarding the message not to betransmitted to the base station after storing parameters included in themessage not to be transmitted; and b6) transmitting the synchronousmessage to the radio resource controller.
 39. The method as recited inclaim 38, further comprising the steps of: a) controlling a callmanagement and a mobility management of the mobile station; b)controlling a radio resource used for transmitting the synchronousmessage; c) controlling a medium access to the physical controller; andd) transporting the synchronous message to the base station.
 40. Themethod as recited in claim 39, further comprising the step of:converting an asynchronous protocol of the asynchronous message into asynchronous protocol.
 41. The method as recited in claim 38, wherein thestep b4) includes the steps of: b4-1) determining whether there is anasynchronous parameter in the message to be transmitted to the basestation or not; b4-2) if there is the asynchronous parameter, mappingthe asynchronous parameter to a synchronous parameter; and b4-3) if not,generating a synchronous parameter based on stored information.
 42. Themethod as recited in claim 38, wherein the supporting entities includes:a first supporting entity placed in the radio resource controller, forproviding information related to a radio resource control; a secondsupporting entity placed in the radio link controller, for providinginformation related to a radio link; a third supporting entity placed inthe medium access controller, for providing information related to amedium access to the physical controller; and a fourth supporting entityplaced in the physical controller, for providing information related toa physical interface.
 43. An apparatus for transmitting a message froman asynchronous radio network to a synchronous core network, the radionetwork having a base station (BS) and a mobile station, the basestation having a radio resource controller, a radio link controller, amedium access controller and a physical controller, the apparatuscomprising: means for receiving an asynchronous message; and a mappingentity for mapping the asynchronous message to a synchronous messagebased on information from supporting entities placed in the radioresource controller, the radio link controller, the medium accesscontroller and the physical controller, wherein the mapping entityincludes: means for selecting a function necessary to map anasynchronous message to a synchronous message; means for determiningwhether the asynchronous message is to be transmitted to the corenetwork or not; means for storing information necessary to map theasynchronous message to the synchronous message if the asynchronousmessage is to be transmitted to the core network; means for mappingparameters in the asynchronous message to those in the synchronousmessage, thereby generating the synchronous message: means fordiscarding the message not to be transmitted to the core network afterstoring parameters included in the message not to be transmitted; andmeans for transmitting the synchronous message to the radio resourcecontroller.
 44. The apparatus as recited in claim 43, furthercomprising: means for controlling a call management and a mobilitymanagement of the mobile station; means for controlling a radio resourceused for transmitting the asynchronous message; means for controlling amedium access to the physical controller; and means for transporting theasynchronous message to the asynchronous mobile station.
 45. Theapparatus as recited in claim 44, further comprising: means forconverting an asynchronous protocol of the asynchronous message frominto a synchronous protocol.
 46. The apparatus as recited in claim 43,wherein the means for mapping parameters includes: means for determiningwhether there is an asynchronous parameter in the message to betransmitted to the core network or not; means for mapping theasynchronous parameter to a synchronous parameter if there is theasynchronous parameter; and means for generating a synchronous parameterbased on stored information if not.
 47. The apparatus as recited inclaim 43, wherein the supporting entities includes: a first supportingentity placed in the radio resource controller, for providinginformation related to a radio resource control; a second supportingentity placed in the radio link controller, for providing informationrelated to a radio link; a third supporting entity placed in the mediumaccess controller, for providing information related to a medium accessto the physical controller; and a fourth supporting entity placed in thephysical controller, for providing information related to a physicalinterface.
 48. he apparatus as recited in claim 47, wherein the firstsupporting entity includes: means for transmitting information from themapping entity to the radio resource controller; means for interfacingthe mapping entity with the radio resource controller; and means forcontrolling a radio resource setting and management based on informationfrom the means for interfacing.
 49. The apparatus as recited in claim47, wherein the second supporting entity includes: means fortransmitting information from the mapping entity to the radio linkcontroller; means for interfacing the mapping entity with the radio linkcontroller; and means for controlling setting and releasing a connectionto the radio link controller based on information from the means forinterfacing.
 50. The apparatus as recited in claim 47, wherein the thirdsupporting entity includes: means for transmitting information from themapping entity to the medium access controller; means for interfacingthe mapping entity with the medium access controller; and means forcontrolling reassignment of the radio resource and interface between theradio link controller and the physical controller based on informationfrom the means for interfacing.
 51. The apparatus as recited in claim47, wherein the fourth supporting entity includes: means fortransmitting information from the mapping entity to the physicalcontroller; means for interfacing the mapping entity with the physicalcontroller; and means for controlling radio interface based oninformation from the means for interfacing.
 52. A base station fortransmitting a message from an asynchronous radio network to asynchronous core network, the radio network having a base station (BS)and a mobile station, the base station having a radio resourcecontroller, a radio link controller, a medium access controller and aphysical controller, the base station comprising: means for receiving anasynchronous message; and a mapping entity for mapping the asynchronousmessage to a synchronous message based on information from supportingentities placed in the radio resource controller, the radio linkcontroller, the medium access controller and the physical controller,wherein the means for mapping includes: means for selecting a functionnecessary to map an asynchronous message to a synchronous message; meansfor determining whether the asynchronous message is to be transmitted tothe core network or not; means for storing information necessary to mapthe asynchronous message to the synchronous message if the asynchronousmessage is to be transmitted to the core network; means for mappingparameters in the asynchronous message to those in the synchronousmessage, thereby generating the synchronous message: means fordiscarding parameter not to be transmitted to the core network andstoring information included in the parameter not to be transmitted ontoa predetermined device; and means for transmitting the synchronousmessage to the radio resource controller.
 53. The base station asrecited in claim 52, further comprising: means for controlling a callmanagement and a mobility management of the mobile station; means forcontrolling a radio resource used for transmitting the asynchronousmessage; means for controlling a medium access to the physicalcontroller; and means for transporting the asynchronous message to theasynchronous mobile station.
 54. The base station as recited in claim53, further comprising: means for converting an asynchronous protocol ofthe asynchronous message from into a synchronous protocol.
 55. The basestation as recited in claim 52, wherein the means for mapping parametersincludes: means for determining whether there is an asynchronousparameter in the message to be transmitted to the core network or not;means for mapping the asynchronous parameter to a synchronous parameterif there is an asynchronous parameter; and means for generating asynchronous parameter based on stored information if not.
 56. The basestation as recited in claim 52, wherein the supporting entitiesincludes: a first supporting entity placed in the radio resourcecontroller, for providing information related to a radio resourcecontrol; a second supporting entity placed in the radio link controller,for providing information related to a radio link; a third supportingentity placed in the medium access controller, for providing informationrelated to a medium access to the physical controller; and a fourthsupporting entity placed in the physical controller, for providinginformation related to a physical interface.
 57. The base station asrecited in claim 56, wherein the first supporting entity includes: meansfor transmitting information from the mapping entity to the radioresource controller; means for interfacing the mapping entity with theradio resource controller; and means for controlling a radio resourcesetting and management based on information from the means forinterfacing.
 58. The base station as recited in claim 56, wherein thesecond supporting entity includes: means for transmitting informationfrom the mapping entity to the radio link controller; means forinterfacing the mapping entity with the radio link controller; and meansfor controlling setting and releasing a connection to the radio linkcontroller based on information from the means for interfacing.
 59. Thebase station as recited in claim 56, wherein the third supporting entityincludes: means for transmitting information from the mapping entity tothe medium access controller; means for interfacing the mapping entitywith the medium access controller; and means for controllingreassignment of the radio resource and interface between the radio linkcontroller and the physical controller based on information from themeans for interfacing.
 60. The base station as recited in claim 56,wherein the fourth supporting entity includes: means for transmittinginformation from the mapping entity to the physical controller; meansfor interfacing the mapping entity with the physical controller; andmeans for controlling radio interface based on information from themeans for interfacing.
 61. A mobile station for transmitting a messagefrom an asynchronous radio network to a synchronous core network, theradio network having a base station (BS) and a mobile station, the basestation having a radio resource controller, a radio link controller, amedium access controller and a physical controller, the mobile stationcomprising: means for receiving an asynchronous message; and a mappingentity for mapping the asynchronous message to a synchronous messagebased on information from supporting entities placed in the radioresource controller, the radio link controller, the medium accesscontroller and the physical controller, wherein the means for mappingincludes: means for selecting a function necessary to map anasynchronous message to a synchronous message; means for determiningwhether the asynchronous message is to be transmitted to the corenetwork or not; means for storing information necessary to map theasynchronous message to the synchronous message if the asynchronousmessage is to be transmitted to the core network; means for mappingparameters in the asynchronous message to those in the synchronousmessage, thereby generating the synchronous message; means fordiscarding the message not to be transmitted to the core network afterstoring parameters included in the message not to be transmitted; andmeans for transmitting the synchronous message to the radio resourcecontroller.
 62. The mobile station as recited in claim 61, furthercomprising: means for controlling a call management and a mobilitymanagement of the mobile station; means for controlling a radio resourceused for transmitting the asynchronous message; means for controlling amedium access to the physical controller; and means for transporting theasynchronous message to the asynchronous mobile station.
 63. The mobilestation as recited in claim 62, further comprising: means for convertingan asynchronous protocol of the asynchronous message from into asynchronous protocol.
 64. The mobile station as recited in claim 61,wherein the means for mapping parameters includes: means for determiningwhether there is an asynchronous parameter in the message to betransmitted to the core network or not; means for mapping theasynchronous parameter to a synchronous parameter if there is anasynchronous parameter; and means for generating a synchronous parameterbased on stored information if not.
 65. The mobile station as recited inclaim 61, wherein the supporting entities includes: a first supportingentity placed in the radio resource controller, for providinginformation related to a radio resource control; a second supportingentity placed in the radio link controller, for providing informationrelated to a radio link; a third supporting entity placed in the mediumaccess controller, for providing information related to a medium accessto the physical controller; and a fourth supporting entity placed in thephysical controller, for providing information related to a physicalinterface.
 66. The mobile station as recited in claim 65, wherein thefirst supporting entity includes: means for transmitting informationfrom the mapping entity to the radio resource controller; means forinterfacing the mapping entity with the radio resource controller; andmeans for controlling a radio resource setting and management based oninformation from the means for interfacing.
 67. The mobile station asrecited in claim 65, wherein the second supporting entity includes:means for transmitting information from the mapping entity to the radiolink controller; means for interfacing the mapping entity with the radiolink controller; and means for controlling setting and releasing aconnection to the radio link controller based on information from themeans for interfacing.
 68. The mobile station as recited in claim 65,wherein the third supporting entity includes: means for transmittinginformation from the mapping entity to the medium access controller;means for interfacing the mapping entity with the medium accesscontroller; and means for controlling reassignment of the radio resourceand interface between the radio link controller and the physicalcontroller based on information from the means for interfacing.
 69. Themobile station as recited in claim 65, wherein the fourth supportingentity includes: means for transmitting information from the mappingentity to the physical controller; means for interfacing the mappingentity with the physical controller; and means for controlling radiointerface based on information from the means for interfacing.